BSV-24

Function of BSV-24 in altitude control

The main function of the BSV-24 unit is continuous generation and coordination of control signals according to the operating logic of the SAU system in the “HEIGHT” automatic mode. The unit works with altitude information received from the onboard low-altitude radio altimeter and prepares the corresponding signal for automatic control circuits. This allows the helicopter automation to maintain a selected true height above ground or water surface, depending on flight mode, radio altimeter data and system configuration.

Interface with RV-5 / A-037 radio altimeter

BSV-24 receives height-related input from the RV-5 / A-037 low-altitude radio altimeter. The source context describes the input as an analog electrical signal proportional to current true height, with additional reliability / validity information from the radio altimeter. The BSV-24 unit converts, scales and coordinates this signal for further use by the SAU-V24-1 system. This connection is important for automatic low-altitude flight, hover-related modes and height stabilization tasks where geometric altitude above the surface is required.

BSV-24 in the SAU-V24-1 system architecture

The BSV-24 block works together with other SAU-V24-1 components. The source context identifies BV-24 as the central computing block, PVM-24 and PVP-24 as flight mode control panels, and VUAP-1 as the unified helicopter autopilot. In this architecture, BSV-24 provides the processed radio-altimeter height signal to the control system. The output signal may be used by the BV-24 computer and VUAP-1 autopilot circuits for control of the helicopter pitch / collective pitch channel, depending on system logic and documentation.

Construction and installation of BSV-24

BSV-24 is described as a block-module type unit installed in the helicopter equipment compartment on a shock-mounted frame. The unit is connected to the automatic flight control system wiring through standard aviation plug connectors. According to the source context, the unit has natural cooling through housing perforation. During maintenance, it should be inspected together with connectors, wiring, mounting frame, radio altimeter signal lines, SAU control panels, the BV-24 computing block and the VUAP-1 autopilot interface circuits.

Identification and ordering of BSV-24

Before ordering BSV-24, the helicopter type, SAU-V24-1 configuration, required condition and documentation set should be confirmed. The unit may be required for automatic control system repair, height hold mode troubleshooting, replacement of a defective radio altimeter interface block or spare parts stock for Mi-24 / Mi-35 helicopter avionics. For correct supply, it is useful to confirm whether the request concerns the BSV-24 unit only, associated connectors, mounting hardware, test documentation or related SAU-V24-1 components.